Luminescence of VO43- centers in LiMgPO4 and LiMgVO4: Effect of {[}PO4](3-)/{[}VO4](3-) substitution on the structure and optical properties / Barykina Yu. A.,Medvedeva N. I.,Zubkov V. G.,Kellerman D. G. // JOURNAL OF ALLOYS AND COMPOUNDS. - 2017. - V. 709, l. . - P. 1-7.

ISSN/EISSN:

0925-8388 / 1873-4669

Type:

Article

Abstract:

The effect of V doping on the structure and optical properties of LiMgPO4 was studied. We found that LiMg(PO4)(1-x)(VO4)(x) with x<17\% V retains the crystal structure of LiMgPO4 and demonstrates self-activated luminescence. All emission spectra under 320 nm excitation had the form of a broad band with a maximum at 490 nm and the emission intensity increased with the vanadium concentration. The luminescence with a peak at 560 nm was also observed for LiMgVO4. The UV-Vis diffuse reflectance spectra were recorded for LiMgPO4, and LiMgPO4 with 17\% V and LiMgVO4, and the optical band gaps were estimated to be 4.05, 3.90 and 3.43 eV, respectively. The ab initio calculations predict an absorption edge shift to lower energies with growing vanadium concentration and reproduce very well the experimental band gaps for vanadium containing oxides (LiMgP0.75V0.25O4 and LiMgVO4), but provide a much larger value for LiMgPO4. (C) 2017 Elsevier B.V. All rights reserved.

Author keywords:

LiMgPO4; Optical properties; Ab initio calculations LIGHT-EMITTING-DIODES; MAGNESIUM PHOSPHATE; LITHIUM; TRANSITION; BATTERIES; EMISSION; OSL

DOI:

10.1016/j.jallcom.2017.03.126

Web of Science ID:

ISI:000401042300001

Соавторы в МНС:

—

Другие поля

Поле	Значение
Month	JUN 30
Publisher	ELSEVIER SCIENCE SA
Address	PO BOX 564, 1001 LAUSANNE, SWITZERLAND
Language	English
EISSN	1873-4669
Keywords-Plus	LIGHT-EMITTING-DIODES; MAGNESIUM PHOSPHATE; LITHIUM; TRANSITION; BATTERIES; EMISSION; OSL
Research-Areas	Chemistry; Materials Science; Metallurgy \& Metallurgical Engineering
Web-of-Science-Categories	Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy \& Metallurgical Engineering
Author-Email	kellerman@ihim.uran.ru
Funding-Acknowledgement	Russian Foundation for Basic Research {[}17-03-00158 -a]; Russian Science Foundation {[}16-13-10111]
Funding-Text	This work was financially supported by the Russian Foundation for Basic Research (Grant No. 17-03-00158 -a). The optical measurements were supported by the Russian Science Foundation (Grant No 16-13-10111).
Number-of-Cited-References	58
Usage-Count-Last-180-days	12
Usage-Count-Since-2013	13
Journal-ISO	J. Alloy. Compd.
Doc-Delivery-Number	EU4ZV